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What is a computed tomography (CT) scan? The term âcomputed tomographyâ, or CT, refers to a computerized x-ray imaging procedure in which a narrow beam of x-rays is aimed at a patient and quickly rotated around the body, producing signals that are processed by the machineâs computer to generate cross-sectional imagesâor âslicesââof the body.
Computed tomography of the heart. Computed tomography or heart CT scan (CT coronary angiogram) is a procedure used to assess the extent of occlusion in the coronary arteries, usually in order to diagnose coronary artery disease.